The ADSS (All-Dielectric Self-Supporting) Single/Double Jacket Fiber Optic Cable SPAN 120M 2-288FO is engineered for high-capacity, long-span aerial installations, particularly alongside high-voltage power lines or in areas demanding exceptional electromagnetic interference (EMI) immunity. As a true all-dielectric cable, it contains no metallic components, eliminating risks of electrical conduction, corrosion, and induced currents. This design is crucial for safety and reliability when deployed on power transmission infrastructure. The cable features a robust single or double jacket system (often HDPE) for enhanced environmental protection and is specifically rated for spans up to 120 meters between support structures, carrying between 2 to a substantial 288 optical fibers. Its self-supporting characteristics means it requires no separate messenger wire, simplifying installation and reducing overall weight on poles or towers.
Features
All-Dielectric Construction
Zero metallic elements ensure complete immunity to EMI, lightning induction, and ground potential rise (GPR), vital for co-location with power lines. Eliminates corrosion concerns.
Self-Supporting Design
Integrated high-strength FRP (Fiber Reinforced Plastic) or aramid yarn provides the tensile strength needed to support the cable over rated spans (120m) without a separate messenger.
Long Span Capability
Specifically designed and tested for reliable performance over spans up to 120 meters, reducing the number of support points required.
High Fiber Count
Accommodates dense fiber counts ranging from 2 up to 288 fibers, suitable for backbone and high-capacity access networks.
Robust Jacketing
Single or Double layer High-Density Polyethylene (HDPE) sheath offers superior resistance to UV radiation, moisture ingress, abrasion, and harsh weather conditions (extreme temperatures, ice, wind).
Optimized Buffer Tubes
Loose tube design (typically filled with gel) protects individual fibers from stress and environmental factors.
Excellent Dielectric Strength
Withstands high electrical fields near power lines without breakdown.
Lightweight
Compared to traditional figure-8 or lashed cables with metallic messengers, reducing structural load.
Corrosion Resistance
Entirely non-metallic structure ensures long-term performance without degradation from electrochemical corrosion.
Applications
Overhead Power Line Communication (OPLC)
Primary deployment along high-voltage transmission and distribution lines for utility communication networks (SCADA, protection relaying, voice/data).
Long-Span Aerial Crossings
River crossings, valleys, highways, railways, and other challenging terrains where span lengths exceed typical pole spacing.
FTTH Backbone & Trunk Lines
Providing high-capacity connectivity for Fiber-to-the-Home networks in aerial environments.
Metro/Access Network Expansion
Extending core network reach in urban and suburban aerial infrastructure.
Harsh Environment Networks
Areas prone to lightning, high EMI, salt spray, or severe weather.
Wireless Backhaul
Connecting cell towers where aerial routes are optimal.
FAQ
What does "All-Dielectric" mean and why is it important?
"All-Dielectric" means the cable contains absolutely no metallic components (no strength wires, no armor, no metallic moisture barriers). This is critical for safety when installed near high-voltage power lines, preventing electrical hazards like conduction, arcing, and induced currents. It also eliminates corrosion.
What is the maximum span length for this ADSS cable?
This specific ADSS cable is rated for a maximum span length of 800 meters between support points (poles, towers). Exceeding this can compromise cable integrity and performance.
How many fibers can this ADSS cable carry?
This model is available in configurations ranging from a minimum of 2 optical fibers up to a high capacity of 288 optical fibers.
What is the difference between Single and Double Jacket?
A single jacket provides standard environmental protection. A double jacket offers an extra layer of HDPE, significantly enhancing resistance to abrasion, crushing, moisture penetration, and UV degradation, ideal for extremely harsh environments or areas with high mechanical stress risk.
Is this cable suitable for installation directly on power line towers?
Yes, the all-dielectric nature makes ADSS cables like this one the preferred and often mandatory choice for direct attachment to power line towers and poles due to safety and reliability requirements.
Equipped with the most advanced fiber drawing towers, high-speed proof testers,and other optical and mechanical testing facilities, CROFC is capable of producing 15 million core kilometres fibers and cables with superior performance.
